如何在PHP表单中不清除输入字段？ [英] How to not clear input fields in php form?

问题描述

我有一个使用php的网页，并有一大堆用户输入数据的输入字段，并将输入转换为SQL语句来查询某个数据库。我成功解析了输入字段并将SQL语句放在一起，但是当他们单击提交按钮时，所有输入字段都被清除。我怎样才能让它在每次用户点击提交时都不会被擦除？

在像

这样的局部变量中使用

 <？php 
 $ name =''; 
 $ last =''; 
 
 if（isset（$ _ POST ['post_me']））{
 $ name = $ _POST ['post_me']; 
 $ last = $ _POST ['last']; 
 //进一步处理
} 
？> 
< form method =post> 
< input type =textname =namevalue =<？php echo $ name;？> /> 
< input type =textname =lastvalue =<？php echo $ last;？> /> 
< input type =submitname =post_me/> 
< / form> 
  

I have a webpage that uses php and has a bunch of input fields in which a user enters some data and I turn the input into an SQL statement to query some database. I successfully parse the input fields and put the SQL statement together but when they click the "submit" button, all the input fields get cleared. How can I make it so these input fields don't get erase every time the user clicks "submit"?

解决方案

Store them in local variables like

<?php
$name = '';
$last = '';

if(isset($_POST['post_me'])) {
   $name = $_POST['post_me'];
   $last = $_POST['last'];
   //Process further
}
?>
<form method="post">
  <input type="text" name="name" value="<?php echo $name; ?>" />
  <input type="text" name="last" value="<?php echo $last; ?>" />
  <input type="submit" name="post_me" />
</form>

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